NILFS

From Openmoko

kernelnewbies.org: Linux 2.6.30: 1.1. NILFS2, a log-structured filesystem Quote: "...Another advantage of this approach is that the log offers a coherent historical view of all the operations done in the disk in the past. This is called "continuous snapshotting" - snapshots of modifications done in all the filesystem at any time are created automatically due to the log-structure design, with no requirement of intervention from an admin, and with the filesystem size as the only limit. NILFS2 allows to access those snapshots and even mount them (on read-only mode)..."